I reiterate that the area looks amazing. But this thread should be good for feedback.
I am exploring it right now, and I noticed that among the stage dressings there could be an Underdark/drow interiors one. Ideally also a tribal interior, for stuff related to goblins/orcs/etc.
The current city theme, which is good, is surface based. I have of course no idea how hard or easy it is to change, just mentioned it because I think it would be handy for the type of plays we usually do below. In worst case, we can always bring in fixtures of course.